vauxhall vivaro 53 plate 1.9 diesel HELP PLEASE

[michmm2000]

can anyone tell me what are the signs that the crank shaft sensor has gone or is going on the vauxhall vivaro? when i start it in the morning i have no revs for about 5 minutes then it just shoots up i am then able to drive as normal it also blows white smoke.it has recentley got worse & now when i pull off i have no power.i have changed the cam shaft sensor,the egr valve,the air filter,the diesel filter & the mass air flow sensor.my engine managment light is not on.after having trying almost everything someone has now suggested it could be the crank shaft.any info really appreciated as i am now at a loss ,thanks michelle

 

[Peter.N.]

I,m afraid I don't know a lot about modern diesels, all mine are IDIs, nice and simple, but white smoke is a sign of unburnt fuel,it could be that the timing is out, but that would normally make it difficult to start, I think a faulty crank shaft sensor would prevent it from starting. If I were you I would take along to a diesel specialist, they usually know what they are doing and don't charge the earth.

Peter

 

[Belle427]

crank sensors usually cause non start problems not the symptoms you describe.
I see your in gwent, merthyr tydfil college have a specialist diesel diagnostic centre on site and its very good and not expensive.

 

[michmm2000]

thanks for the info i have tried to get a diesel expert to look at it but there is a month waiting b4 they can take a look so i will be trying merthyr thanks again

 

[^neo^]

I'd get the timing checked as mentioned above. I'm pretty sure yours is a chain drive and the chains can stretch. May only knock it out a bit, but can be enough to give grief

 

[harry92]

can anyone tell me what are the signs that the crank shaft sensor has gone or is going on the vauxhall vivaro? when i start it in the morning i have no revs for about 5 minutes then it just shoots up i am then able to drive as normal it also blows white smoke.it has recentley got worse & now when i pull off i have no power.i have changed the cam shaft sensor,the egr valve,the air filter,the diesel filter & the mass air flow sensor.my engine managment light is not on.after having trying almost everything someone has now suggested it could be the crank shaft.any info really appreciated as i am now at a loss ,thanks michelle

Condition of my friend's vivaro is quite the same.. Motor revs up then shoots up to over 2000 RPM's. It settles down to normal after 5 Minutes but this happened after he installed his air filter from Scantech parts.. His engine light does not light up either.. What was the diagnosis with your vivaro?